/* ==========================================================================
   C-Klausurtrainer — Styling
   Ästhetik: Apple-Produkt (klar, großzügig, weiche Tiefe) · Leadpilots-Blau
   (#6B8CFF) als Akzent · Montserrat (lokal eingebettet) · Code bleibt
   Monospace. Mobile-first, heller + dunkler Modus.
   ========================================================================== */

/* ---- Montserrat (lokal, kein CDN) ---------------------------------------- */

@font-face {
  font-family: "Montserrat";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../assets/fonts/montserrat-latin-400-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Montserrat";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("../assets/fonts/montserrat-latin-500-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Montserrat";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("../assets/fonts/montserrat-latin-600-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Montserrat";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../assets/fonts/montserrat-latin-700-normal.woff2") format("woff2");
}
@font-face {
  font-family: "Montserrat";
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url("../assets/fonts/montserrat-latin-800-normal.woff2") format("woff2");
}

/* ---- Design-Tokens ------------------------------------------------------- */

:root {
  --font-ui: "Montserrat", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SF Mono", "SFMono-Regular", ui-monospace, "Menlo", "Cascadia Mono", Consolas, "DejaVu Sans Mono", monospace;

  /* Hell — Apple-typisches Grau-Weiß */
  --bg: #f5f5f7;
  --bg-glow: transparent;
  --surface: #ffffff;
  --surface-2: #ececef;
  --surface-3: #f0f0f3;
  --border: rgba(0, 0, 0, 0.08);
  --border-strong: rgba(0, 0, 0, 0.14);
  --ink: #1d1d1f;
  --ink-dim: #6e6e73;
  --ink-faint: #8e8e93;

  --accent: #6b8cff;          /* Leadpilots-Blau */
  --accent-strong: #4f6ef0;   /* für Text/Links auf Weiß (mehr Kontrast) */
  --accent-contrast: #ffffff;
  --accent-soft: #eaf0ff;
  --accent-ring: rgba(107, 140, 255, 0.35);

  /* Apple-Systemfarben */
  --ok: #248a3d;
  --ok-bright: #34c759;
  --ok-soft: #e4f7ea;
  --bad: #d70015;
  --bad-bright: #ff3b30;
  --bad-soft: #fdeceb;
  --warn: #b25000;
  --warn-soft: #fff2e3;
  --mark: #b25000;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 10px 30px -12px rgba(0, 0, 0, 0.14);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.08), 0 24px 60px -20px rgba(0, 0, 0, 0.22);

  --radius-lg: 20px;
  --radius: 16px;
  --radius-sm: 12px;
  --radius-xs: 9px;

  --ease: cubic-bezier(0.32, 0.72, 0, 1);

  /* Code-Block: immer dunkel (Xcode-artig), in beiden Themes gleich */
  --code-bg: #1c1c22;
  --code-border: rgba(255, 255, 255, 0.08);
  --code-plain: #e4e4ea;
  --code-ln: #56566a;
  --code-kw: #ff7ab2;
  --code-str: #ff8170;
  --code-num: #d9c97c;
  --code-com: #7f8296;
  --code-pp: #b28cff;
  --code-fn: #78c2ff;
}

:root[data-theme="dark"] {
  --bg: #0a0a0c;
  --bg-glow: radial-gradient(60% 45% at 50% -5%, rgba(107, 140, 255, 0.16), transparent 70%);
  --surface: #17171b;
  --surface-2: #24242a;
  --surface-3: #1e1e23;
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --ink: #f5f5f7;
  --ink-dim: #a1a1a9;
  --ink-faint: #8a8a92;

  --accent: #6b8cff;
  --accent-strong: #8ba4ff;
  --accent-contrast: #0a0a0c;
  --accent-soft: rgba(107, 140, 255, 0.15);
  --accent-ring: rgba(107, 140, 255, 0.45);

  --ok: #34c759;
  --ok-bright: #30d158;
  --ok-soft: rgba(48, 209, 88, 0.15);
  --bad: #ff6961;
  --bad-bright: #ff453a;
  --bad-soft: rgba(255, 69, 58, 0.16);
  --warn: #ffd60a;
  --warn-soft: rgba(255, 214, 10, 0.14);
  --mark: #ffd60a;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.5), 0 12px 34px -14px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5), 0 30px 70px -24px rgba(0, 0, 0, 0.8);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0a0a0c;
    --bg-glow: radial-gradient(60% 45% at 50% -5%, rgba(107, 140, 255, 0.16), transparent 70%);
    --surface: #17171b;
    --surface-2: #24242a;
    --surface-3: #1e1e23;
    --border: rgba(255, 255, 255, 0.09);
    --border-strong: rgba(255, 255, 255, 0.16);
    --ink: #f5f5f7;
    --ink-dim: #a1a1a9;
    --ink-faint: #8a8a92;
    --accent-strong: #8ba4ff;
    --accent-contrast: #0a0a0c;
    --accent-soft: rgba(107, 140, 255, 0.15);
    --accent-ring: rgba(107, 140, 255, 0.45);
    --ok: #34c759;
    --ok-bright: #30d158;
    --ok-soft: rgba(48, 209, 88, 0.15);
    --bad: #ff6961;
    --bad-bright: #ff453a;
    --bad-soft: rgba(255, 69, 58, 0.16);
    --warn: #ffd60a;
    --warn-soft: rgba(255, 214, 10, 0.14);
    --mark: #ffd60a;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.5), 0 12px 34px -14px rgba(0, 0, 0, 0.7);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5), 0 30px 70px -24px rgba(0, 0, 0, 0.8);
  }
}

/* ---- Basis ---------------------------------------------------------------- */

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

[hidden] { display: none !important; }

input[type="checkbox"] { accent-color: var(--accent); }

body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--ink);
  background-color: var(--bg);
  background-image: var(--bg-glow);
  background-repeat: no-repeat;
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button { font-family: inherit; color: inherit; }

:focus-visible {
  outline: 3px solid var(--accent-ring);
  outline-offset: 2px;
  border-radius: 8px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---- Kopfzeile ------------------------------------------------------------ */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem clamp(0.9rem, 4vw, 1.6rem);
  padding-top: calc(0.7rem + env(safe-area-inset-top, 0px));
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: none;
  padding: 0.15rem 0.2rem;
  cursor: pointer;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.brand-brace { color: var(--accent); font-weight: 700; }

.brand-name { font-weight: 600; color: var(--ink-dim); font-size: 0.92em; }

.topbar-right { display: flex; align-items: center; gap: 0.55rem; }

.topbar-info {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ink-dim);
  white-space: nowrap;
}

.icon-btn {
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 50%;
  width: 2.3rem;
  height: 2.3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s var(--ease), border-color 0.2s;
}

.icon-btn:hover { border-color: var(--border-strong); }
.icon-btn:active { transform: scale(0.9); }

.user-chip {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-strong);
  white-space: nowrap;
  max-width: 9rem;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---- Hauptbereich & Fußzeile ---------------------------------------------- */

.app {
  flex: 1;
  width: 100%;
  max-width: 900px;
  margin: 0 auto;
  padding: clamp(1rem, 3.5vw, 2rem);
  padding-bottom: 3.5rem;
}

.footer {
  padding: 1rem clamp(0.9rem, 4vw, 1.6rem);
  padding-bottom: calc(1rem + env(safe-area-inset-bottom, 0px));
  border-top: 1px solid var(--border);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--ink-faint);
  text-align: center;
}

/* ---- Ladeschirm ------------------------------------------------------------ */

.loading-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  padding: 5rem 1rem;
  color: var(--ink-dim);
  font-weight: 500;
}

.loading-cursor {
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  border: 3px solid var(--surface-2);
  border-top-color: var(--accent);
  font-size: 0;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Views & Karten --------------------------------------------------------- */

.view { animation: viewIn 0.4s var(--ease); }

@keyframes viewIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

.view-header {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin: 0.2rem 0 1.4rem;
}

.view-header h1 {
  margin: 0;
  font-size: clamp(1.35rem, 4.5vw, 1.7rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1.1rem, 3vw, 1.6rem);
  box-shadow: var(--shadow);
  margin-bottom: 1.1rem;
}

.section-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  margin: 1.8rem 0 0.7rem;
}

/* ---- Buttons ---------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  border-radius: 980px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  padding: 0.62rem 1.25rem;
  font-weight: 600;
  font-size: 0.94rem;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: transform 0.15s var(--ease), border-color 0.2s, background 0.2s, box-shadow 0.2s;
  touch-action: manipulation;
}

.btn:hover { border-color: var(--accent); }
.btn:active { transform: scale(0.96); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary {
  background: var(--accent);
  border-color: transparent;
  color: var(--accent-contrast);
  box-shadow: 0 1px 2px rgba(79, 110, 240, 0.3), 0 8px 20px -8px var(--accent-ring);
}

.btn-primary:hover { background: var(--accent-strong); border-color: transparent; filter: none; }

.btn-ghost { background: transparent; border-color: var(--border); color: var(--ink-dim); box-shadow: none; }
.btn-danger { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, transparent); background: transparent; box-shadow: none; }
.btn-small { padding: 0.4rem 0.85rem; font-size: 0.83rem; }
.btn-block { width: 100%; }

.btn-row { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 1.1rem; }

/* ---- Startseite -------------------------------------------------------------- */

.hero { margin-bottom: 1.4rem; }

.hero h1 {
  font-size: clamp(1.7rem, 6vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin: 0.2rem 0 0.5rem;
}

.hero h1 .accent {
  background: linear-gradient(120deg, var(--accent), var(--accent-strong));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: var(--accent);
}

.hero p { margin: 0; color: var(--ink-dim); max-width: 56ch; font-weight: 500; }

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
  margin: 1.3rem 0;
}

.stat-tile {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.9rem 0.8rem;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.stat-value {
  font-size: clamp(1.2rem, 4vw, 1.6rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--accent-strong);
}

.stat-label { font-size: 0.68rem; font-weight: 600; color: var(--ink-faint); text-transform: uppercase; letter-spacing: 0.04em; margin-top: 0.15rem; }

.mode-grid { display: grid; gap: 0.9rem; grid-template-columns: 1fr; }

@media (min-width: 640px) { .mode-grid { grid-template-columns: repeat(3, 1fr); } }

.mode-card {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: transform 0.3s var(--ease), border-color 0.2s, box-shadow 0.3s;
}

.mode-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--accent); }
.mode-card:active { transform: translateY(-1px) scale(0.99); }

.mode-card .mode-icon {
  font-size: 1.3rem;
  width: 2.8rem;
  height: 2.8rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  margin-bottom: 0.3rem;
}

.mode-card h3 { margin: 0; font-size: 1.08rem; font-weight: 700; letter-spacing: -0.02em; }

.mode-card p { margin: 0; font-size: 0.86rem; color: var(--ink-dim); flex: 1; font-weight: 500; }

.mode-meta {
  font-size: 0.78rem;
  color: var(--accent-strong);
  font-weight: 600;
}

.notice {
  font-size: 0.83rem;
  font-weight: 500;
  color: var(--ink-dim);
  background: var(--surface-3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.9rem;
  margin: 0.9rem 0;
}

/* ---- Themen-Statistik ---------------------------------------------------------- */

.area-details { border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); margin-bottom: 0.6rem; overflow: hidden; box-shadow: var(--shadow-sm); }

.area-details summary {
  cursor: pointer;
  padding: 0.8rem 1rem;
  font-weight: 600;
  font-size: 0.92rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.6rem;
  list-style: none;
}

.area-details summary::-webkit-details-marker { display: none; }

.area-details summary::after { content: "⌄"; color: var(--ink-faint); font-size: 1.2rem; line-height: 1; transition: transform 0.3s var(--ease); }
.area-details[open] summary::after { transform: rotate(180deg); }

.area-summary-meta { font-size: 0.74rem; font-weight: 500; color: var(--ink-faint); }

.topic-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.35rem 0.8rem;
  padding: 0.6rem 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.87rem;
  font-weight: 500;
  align-items: center;
}

.topic-name { min-width: 0; }

.topic-nums { font-size: 0.74rem; color: var(--ink-faint); white-space: nowrap; }

.topic-row .bar { grid-column: 1 / -1; }

.bar {
  height: 6px;
  border-radius: 999px;
  background: var(--surface-2);
  overflow: hidden;
}

.bar-fill { height: 100%; border-radius: 999px; background: var(--accent); transition: width 0.5s var(--ease); }
.bar-fill.low { background: var(--bad-bright); }
.bar-fill.mid { background: #ff9f0a; }

/* ---- Auswahl (Setup-Screens) ----------------------------------------------------- */

.chip-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0.6rem 0 0.9rem; }

.chip {
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink-dim);
  border-radius: 999px;
  padding: 0.38rem 0.95rem;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}

.chip.selected {
  background: var(--accent);
  border-color: transparent;
  color: var(--accent-contrast);
  box-shadow: 0 4px 12px -4px var(--accent-ring);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.6rem 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
}

.checkbox-row input { width: 1.15rem; height: 1.15rem; flex-shrink: 0; }

.checkbox-row .count { margin-left: auto; font-size: 0.74rem; color: var(--ink-faint); font-variant-numeric: tabular-nums; }

.setup-sticky {
  position: sticky;
  bottom: 0.8rem;
  z-index: 5;
  display: flex;
  gap: 0.7rem;
  align-items: center;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 0.7rem 0.9rem;
  margin-top: 1.2rem;
}

.setup-sticky .pool-count { font-size: 0.85rem; font-weight: 600; color: var(--ink-dim); flex: 1; }

.opt-line {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding: 0.85rem 0.2rem;
  border-bottom: 1px solid var(--border);
}

.opt-line:last-child { border-bottom: none; }

.opt-line input[type="checkbox"] { width: 1.25rem; height: 1.25rem; }

.opt-line .opt-text { flex: 1; font-weight: 600; }
.opt-line .opt-text small { display: block; color: var(--ink-dim); font-weight: 500; margin-top: 0.1rem; }

.opt-line input[type="number"] {
  width: 4.8rem;
  padding: 0.4rem 0.55rem;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.95rem;
  text-align: center;
}

/* ---- Fragekarte -------------------------------------------------------------------- */

.qcard { animation: qIn 0.35s var(--ease); }

@keyframes qIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

.qmeta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.8rem;
  font-size: 0.72rem;
  color: var(--ink-dim);
}

.tag {
  border: 1px solid var(--border);
  background: var(--surface-3);
  border-radius: 999px;
  padding: 0.16rem 0.6rem;
  font-weight: 600;
  white-space: nowrap;
}

.tag.diff-leicht { color: var(--ok); background: var(--ok-soft); border-color: transparent; }
.tag.diff-mittel { color: var(--warn); background: var(--warn-soft); border-color: transparent; }
.tag.diff-schwer { color: var(--bad); background: var(--bad-soft); border-color: transparent; }

.mark-btn {
  margin-left: auto;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  color: var(--ink-dim);
  transition: all 0.2s var(--ease);
}

.mark-btn.marked {
  color: var(--mark);
  border-color: color-mix(in srgb, var(--mark) 50%, transparent);
  background: var(--warn-soft);
}

.qprompt { font-size: 1.08rem; font-weight: 600; letter-spacing: -0.01em; margin: 0.2rem 0 1rem; white-space: pre-wrap; line-height: 1.4; }

.group-prompt { font-size: 0.92rem; color: var(--ink-dim); margin: 0 0 0.7rem; font-weight: 500; }

/* ---- Code-Block ---------------------------------------------------------------------- */

.codeblock {
  background: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--radius-sm);
  margin: 0 0 1.1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--code-plain);
  box-shadow: var(--shadow);
}

.codeblock .code-inner { padding: 0.9rem 1rem; min-width: max-content; }

.cl { display: flex; white-space: pre; }

.cl .ln {
  flex-shrink: 0;
  width: 2.2em;
  text-align: right;
  padding-right: 1em;
  color: var(--code-ln);
  user-select: none;
}

.codeblock.inline-expr { font-size: 1rem; }
.codeblock.inline-expr .code-inner { padding: 0.7rem 1rem; }

.tk-kw { color: var(--code-kw); }
.tk-str { color: var(--code-str); }
.tk-num { color: var(--code-num); }
.tk-com { color: var(--code-com); font-style: italic; }
.tk-pp { color: var(--code-pp); }
.tk-fn { color: var(--code-fn); }

/* ---- Antwort-Widgets -------------------------------------------------------------------- */

.options { display: flex; flex-direction: column; gap: 0.55rem; margin: 0.4rem 0; }

.option {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  text-align: left;
  width: 100%;
  border: 1.5px solid var(--border-strong);
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 0.8rem 0.9rem;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.15s var(--ease);
}

.option:not(:disabled):hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent-soft) 45%, var(--surface)); }
.option:not(:disabled):active { transform: scale(0.99); }
.option:disabled { cursor: default; }

.option .option-key {
  flex-shrink: 0;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink-dim);
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  width: 1.6rem;
  height: 1.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.02rem;
  font-variant-numeric: tabular-nums;
}

.option .option-text { white-space: pre-wrap; word-break: break-word; padding-top: 0.12rem; }
.option .option-text code, .statement-text code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--surface-2);
  padding: 0.05em 0.35em;
  border-radius: 5px;
}

.option.selected {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.option.selected .option-key { border-color: var(--accent); color: var(--accent-contrast); background: var(--accent); }

.option.reveal-correct {
  border-color: var(--ok-bright);
  background: var(--ok-soft);
}

.option.reveal-correct .option-key { border-color: var(--ok-bright); color: #fff; background: var(--ok-bright); }

.option.reveal-wrong {
  border-color: var(--bad-bright);
  background: var(--bad-soft);
}

.option.reveal-wrong .option-key { border-color: var(--bad-bright); color: #fff; background: var(--bad-bright); }

/* R/F-Segmentschalter im iOS-Stil */
.statement-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.9rem;
  padding: 0.75rem 0;
  border-top: 1px solid var(--border);
}

.statement-row:first-child { border-top: none; }

.statement-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ink-faint);
  flex-shrink: 0;
  width: 1.6rem;
  font-variant-numeric: tabular-nums;
}

.statement-text { flex: 1 1 16rem; font-size: 0.93rem; font-weight: 500; white-space: pre-wrap; }

.statement-result { flex-basis: 100%; }

.seg { display: inline-flex; background: var(--surface-2); border-radius: 11px; padding: 2px; gap: 2px; flex-shrink: 0; }

.seg-btn {
  border: none;
  background: transparent;
  color: var(--ink-dim);
  padding: 0.38rem 0.95rem;
  font-size: 0.83rem;
  font-weight: 600;
  border-radius: 9px;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}

.seg-btn.selected { background: var(--accent); color: var(--accent-contrast); box-shadow: 0 1px 3px rgba(0, 0, 0, 0.14); }

.seg-btn.reveal-correct { background: var(--ok-bright); color: #fff; }
.seg-btn.reveal-wrong { background: var(--bad-bright); color: #fff; }

.seg-btn:disabled { cursor: default; }

.statement-icon { flex-shrink: 0; font-weight: 700; }
.statement-icon.ok { color: var(--ok-bright); }
.statement-icon.bad { color: var(--bad-bright); }

/* Texteingabe (Kurzantwort) */
.answer-line { display: flex; gap: 0.6rem; margin: 0.4rem 0; }

.answer-input {
  flex: 1;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 1rem;
  min-width: 0;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.answer-input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-ring); }

.answer-textarea {
  width: 100%;
  min-height: 6.5rem;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-strong);
  background: var(--surface);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 0.95rem;
  font-weight: 500;
  resize: vertical;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.answer-textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--accent-ring); }

/* ---- Feedback ------------------------------------------------------------------------------ */

.feedback {
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  margin: 0.9rem 0 0.4rem;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  animation: qIn 0.3s var(--ease);
}

.feedback.ok { background: var(--ok-soft); color: var(--ok); }
.feedback.bad { background: var(--bad-soft); color: var(--bad); }

.explanation {
  background: var(--surface-3);
  border-left: 3px solid var(--accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 0.75rem 1rem;
  margin: 0.5rem 0;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ink);
  white-space: pre-wrap;
  line-height: 1.5;
}

.explanation .exp-label {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-strong);
  margin-bottom: 0.3rem;
}

.shake { animation: shake 0.4s var(--ease); }

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  50% { transform: translateX(6px); }
  75% { transform: translateX(-4px); }
}

.kbd-hint {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--ink-faint);
  text-align: center;
  margin-top: 0.9rem;
}

.kbd-hint kbd {
  font-family: var(--font-mono);
  border: 1px solid var(--border-strong);
  border-radius: 5px;
  padding: 0.05rem 0.35rem;
  background: var(--surface-2);
}

@media (hover: none) { .kbd-hint { display: none; } }

.session-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  margin-bottom: 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ink-dim);
}

/* ---- Klausurmodus --------------------------------------------------------------------------- */

.exam-bar {
  position: sticky;
  top: calc(3.6rem + env(safe-area-inset-top, 0px));
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 0.6rem 0.9rem;
  margin-bottom: 1.1rem;
  font-size: 0.84rem;
  font-weight: 600;
}

.timer { font-weight: 700; color: var(--accent-strong); white-space: nowrap; font-variant-numeric: tabular-nums; }

.timer.warn { color: var(--bad-bright); animation: pulse 1s infinite; }

@keyframes pulse { 50% { opacity: 0.4; } }

.exam-progress { flex: 1; color: var(--ink-dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.exam-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.9rem 0; }

.echip {
  min-width: 2.1rem;
  height: 2.1rem;
  padding: 0 0.4rem;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--ink-dim);
  cursor: pointer;
  font-variant-numeric: tabular-nums;
  transition: all 0.2s var(--ease);
}

.echip.answered { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-strong); }

.echip.current { outline: 2px solid var(--accent); outline-offset: 1px; }

.exam-nav { display: flex; gap: 0.6rem; margin-top: 1.1rem; }

.exam-nav .spacer { flex: 1; }

.part-banner {
  font-size: 0.76rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent-strong);
  margin-bottom: 0.6rem;
}

/* ---- Ergebnis ------------------------------------------------------------------------------- */

.result-hero {
  text-align: center;
  padding: 1.8rem 1rem;
}

.grade-badge {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 8rem;
  height: 8rem;
  border-radius: 50%;
  border: 5px solid var(--accent);
  margin-bottom: 1rem;
  box-shadow: 0 0 0 8px var(--accent-soft), var(--shadow);
}

.grade-badge.failed { border-color: var(--bad-bright); box-shadow: 0 0 0 8px var(--bad-soft), var(--shadow); }

.grade-badge .grade-num { font-size: 2.3rem; font-weight: 800; letter-spacing: -0.04em; }
.grade-badge .grade-label {
  font-size: 0.55rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--ink-dim);
  max-width: 6.4rem;
  text-align: center;
}

.result-points { font-size: 1.1rem; font-weight: 700; letter-spacing: -0.02em; margin: 0.3rem 0; }

.result-sub { color: var(--ink-dim); font-size: 0.86rem; font-weight: 500; }

.review-item { border-top: 1px solid var(--border); padding: 1rem 0; }
.review-item:first-child { border-top: none; }

.review-status { font-weight: 700; font-size: 0.82rem; }
.review-status.ok { color: var(--ok); }
.review-status.bad { color: var(--bad); }
.review-status.blank { color: var(--warn); }

.review-answer { font-size: 0.86rem; margin: 0.35rem 0; font-weight: 500; }
.review-answer .lbl { color: var(--ink-faint); font-size: 0.76rem; font-weight: 600; }

/* ---- Leerzustand ----------------------------------------------------------------------------- */

.empty-state {
  text-align: center;
  padding: 3.5rem 1rem;
  color: var(--ink-dim);
  font-weight: 500;
}

.empty-state .big { font-size: 2.6rem; margin-bottom: 0.6rem; }

/* ---- Fehleranzeige beim Laden ------------------------------------------------------------------ */

.load-error {
  max-width: 40rem;
  margin: 2rem auto;
}

.load-error code {
  display: block;
  font-family: var(--font-mono);
  background: var(--code-bg);
  color: var(--code-plain);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.9rem;
  margin: 0.7rem 0;
  overflow-x: auto;
}

/* ---- Login ------------------------------------------------------------------ */

.login-view { max-width: 27rem; margin: 7vh auto 0; }

.login-card { text-align: center; padding: 2.4rem 1.8rem; box-shadow: var(--shadow-lg); }

.login-logo {
  font-size: 2.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.login-title { font-size: 1.4rem; font-weight: 700; letter-spacing: -0.03em; margin: 0 0 0.5rem; }

.login-sub { color: var(--ink-dim); font-size: 0.9rem; font-weight: 500; margin: 0 0 1.6rem; }

.login-label {
  display: block;
  text-align: left;
  font-size: 0.76rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-faint);
  margin-bottom: 0.4rem;
}

.login-card .answer-input { width: 100%; text-align: center; font-family: var(--font-ui); font-weight: 600; }

.login-error {
  color: var(--bad);
  background: var(--bad-soft);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 500;
  margin: 0.9rem 0 0;
}

/* ---- Kaffeekasse / Unterstützung (Login-Screen) ----------------------------- */

.support-card { text-align: center; }

.support-title {
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.4rem;
}

.support-text {
  color: var(--ink-dim);
  font-size: 0.88rem;
  font-weight: 500;
  margin: 0 auto 1.2rem;
  max-width: 34ch;
}

.support-qr-wrap {
  display: inline-block;
  background: #ffffff;               /* immer weiß, damit der Code scannbar bleibt */
  padding: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.support-qr { display: block; width: 168px; height: 168px; }

.support-hint {
  color: var(--ink-faint);
  font-size: 0.76rem;
  font-weight: 500;
  margin: 0.7rem 0 1.1rem;
}

.support-or {
  color: var(--ink-dim);
  font-size: 0.82rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.support-email {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink);
  background: var(--surface-2);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  padding: 0.45rem 0.95rem;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}

.support-email::before { content: "⧉"; color: var(--accent-strong); font-size: 1em; }
.support-email:hover { border-color: var(--accent); color: var(--accent-strong); }
.support-email:active { transform: scale(0.97); }

.support-toast {
  color: var(--ok);
  font-size: 0.82rem;
  font-weight: 600;
  margin: 0.8rem 0 0;
  animation: qIn 0.25s var(--ease);
}